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Home > Products > Integrated Circuits (ICs) > Linear > Audio Amplifiers

STMicroelectronics TDA7498MVTR

Name: TDA7498MVTR
Brand: STMicroelectronics
SKU: TDA7498MVTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7498MVTR

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 36-PowerFSOP (0.295", 7.50mm Width)

Datasheet:: TDA7498MVTR.pdf

Description:: IC AMP D MONO 100W POWERSSO36

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA7498MVTR from STMicroelectronics is a mono BTL Class-D audio amplifier delivering 100 W into 6 Ω at 10% THD with 36 V supply, featuring four fixed gain settings (25.6–37.6 dB), differential inputs, and integrated thermal/short-circuit protection. It targets high-power active speakers and home audio systems requiring compact, efficient amplification with external heatsink mounting.

For engineers reviewing the TDA7498MVTR datasheet, TDA7498MVTR pinout, TDA7498MVTR application, or TDA7498MVTR equivalent, key selection criteria include single-supply operation (14–39 V), 90% efficiency, diagnostic output (pin DIAG), and PowerSSO-36 EPU package thermal performance (R_{th j-case} = 2 °C/W).

Technical Context

The TDA7498MVTR implements a self-oscillating Class-D modulator with internal 310 kHz switching frequency (±20 kHz), configurable via ROSC pin or external SYNCLK synchronization. Its BTL output stage drives low-impedance loads (6 Ω or 8 Ω) using complementary PWM outputs (OUTP/OUTN) with integrated power-stage regulation (VDDPW = 3.3 V).

Differential analog input (INP/INN) interfaces with 60 kΩ input resistance and supports gain selection via two digital inputs (GAIN0/GAIN1), while protection logic monitors junction temperature (shutdown at 150 °C), overvoltage (42 V), and undervoltage (8 V) conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	100 W @ THD = 10%, RL = 6 Ω, VCC = 36 V - sufficient for full-range active speaker drivers
Efficiency (η)	90% @ Po = 100 W - minimizes heatsink size and system thermal load
Supply Range	14–39 V single supply - compatible with standard 24 V/36 V audio rails
Gain Settings	25.6 / 31.6 / 35.1 / 37.6 dB - selectable via GAIN0/GAIN1 pins for input sensitivity matching
THD+N	0.1% @ 1 W, 1 kHz - ensures low distortion in mid-power listening range
Switching Frequency	290–330 kHz (internal) - enables compact LC filter design (e.g., 22 µH + 470 nF for 6 Ω)
Input Resistance	60 kΩ (typical) - sets high-pass cutoff with external coupling capacitor (e.g., 470 nF → f_C < 20 Hz)

Pinout & Package

The TDA7498MVTR uses a PowerSSO-36 exposed pad up (EPU) package with integrated thermal pad (EP) tied to ground for direct heatsink attachment. The 36-pin layout includes dual power grounds (PGND, SUB_GND), dual output pairs (OUTP/OUTN), and dedicated signal/power domain supplies (VDDS, VDDPW, SVCC).

Pin/Terminal	Circuit Role	Design Meaning
10, 11 OUTN	Negative PWM output	BTL negative-phase drive for speaker load; requires LC low-pass filtering
12, 13 PVCC	Power supply for audio stage	Main high-current supply rail (14–39 V); decoupled externally
16, 17 OUTP	Positive PWM output	BTL positive-phase drive; complements OUTN for differential speaker drive
20 STBY	Standby mode control	Active-low input; pulls device to ~1 µA quiescent current when low
22, 23 INP/INN	Differential analog input	Rejects common-mode noise; 60 kΩ input impedance defines RC high-pass corner
24 ROSC	Oscillator frequency setting	Resistor-to-ground sets internal clock (e.g., 39 kΩ → 310 kHz)
25 SYNCLK	External clock I/O	Accepts or outputs 2× switching frequency for multi-amplifier synchronization
28 DIAG	Open-drain diagnostic	Asserts low during thermal shutdown, overcurrent, or overvoltage events
30, 31 GAIN0/GAIN1	Digital gain select	Two-bit encoding selects one of four closed-loop gains (25.6–37.6 dB)
EP (exposed pad)	Thermal interface	Must be soldered to PCB copper pour connected to ground for R_{th j-case} = 2 °C/W

Key Features

Feature	Design Value
Differential input architecture	Rejects common-mode noise from long interconnects in active speaker cabinets
Four-step programmable gain	Eliminates need for external gain-setting resistors; simplifies BOM and layout
Integrated diagnostic output (DIAG)	Single-pin fault reporting for thermal, overcurrent, and overvoltage events
Externally synchronizable clock	Enables phase-aligned operation of multiple TDA7498MVTRs in multi-channel systems
Power-stage voltage regulator (VDDPW)	Provides stable 3.3 V for gate drivers independent of main PVCC rail fluctuations

Applications

Home Theater Soundbar

Powered Studio Monitor

Use Scenario: Compact soundbar with integrated 100 W mono bass channel driving passive subwoofer section.

IC Role / Device Role / Timing Role: Class-D power stage converting line-level differential input to high-current BTL PWM output.

Use Value: 90% efficiency reduces internal heat buildup in sealed enclosure; 36 V operation enables dynamic headroom beyond 24 V rails.

Use Scenario: Bi-amplified nearfield monitor where TDA7498MVTR drives low-frequency driver while separate amp handles HF.

IC Role / Device Role / Timing Role: High-fidelity mono power amplifier with <0.1% THD+N at 1 W for accurate low-end reproduction.

Use Value: Differential input rejects ground-loop noise from DAC stage; DIAG pin enables real-time thermal monitoring during extended playback.

Smart Speaker Bass Module

Multi-Zone Audio Distribution

Use Scenario: Voice-assistant speaker with dedicated bass boost channel powered by TDA7498MVTR.

IC Role / Device Role / Timing Role: Mute/standby-controlled amplifier activated only during bass-heavy content playback.

Use Value: 70 dB mute attenuation prevents speaker "pop"; STBY pin enables <10 µA sleep current for always-on devices.

Use Scenario: Central audio hub distributing synchronized audio to multiple rooms using identical TDA7498MVTR channels.

IC Role / Device Role / Timing Role: Synchronized Class-D amplifier slave using SYNCLK to lock switching frequency across zones.

Use Value: Eliminates audible beat frequencies between zones; shared clock reduces EMI interference in dense installations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar mono Class-D audio amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5630PHDR	Higher 130 W output (6 Ω), but requires dual ±15 V supplies and larger 48-pin HTSSOP package	Suited for industrial audio where dual-rail supplies exist; less suitable for single-rail consumer designs	Select if higher power and dual-supply infrastructure are available; avoid for space-constrained single-rail layouts
TPA3116D2PWPR	Lower 50 W output (6 Ω), 80% efficiency, no DIAG pin, but smaller 32-pin HTSSOP package	Targeted at cost-sensitive mid-power applications without diagnostic requirements	Select for budget-conscious designs under 60 W; avoid when thermal monitoring or >80 W is required

Compared with TAS5630PHDR and TPA3116D2PWPR, the TDA7498MVTR uniquely balances 100 W single-supply operation, integrated diagnostics, and PowerSSO-36 EPU thermal performance-making it optimal for premium active speakers needing reliability and compact heatsinking.

Availability

TDA7498MVTR is available at Aetrix Electronics and suitable for home theater soundbars, powered studio monitors, smart speaker bass modules, and multi-zone audio distribution systems requiring stable component supply and long-term production support.

Supply support for TDA7498MVTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in analog, power, microcontrollers, and audio ICs for industrial, automotive, and consumer markets.

The TDA7498MVTR belongs to ST's high-efficiency Class-D audio amplifier product line, designed specifically for compact, thermally constrained active speaker and home audio applications demanding >90% efficiency and robust protection.

FAQ

What is the minimum recommended LC filter configuration for a 6 Ω load?

The datasheet specifies a 22 µH inductor and 470 nF capacitor as the typical LC filter for 6 Ω loads. This combination provides adequate high-frequency attenuation while maintaining phase margin and stability. Layout must minimize loop area between PVCC, PGND, OUTP, and OUTN traces to suppress EMI, and the filter should be placed adjacent to the amplifier outputs before connecting to the speaker terminals.

How does the DIAG pin indicate thermal overload versus overcurrent events?

The DIAG pin is an open-drain output that pulls low during any active protection event-including thermal shutdown (T_j ≥ 150 °C), overcurrent (I_OUT > 7 A), or overvoltage (V_CC > 43 V). It does not encode event type; external logic must correlate DIAG assertion with operating conditions (e.g., monitor VCC and ambient temperature) to distinguish root causes. No internal debouncing is provided.

Can the TDA7498MVTR operate with a 24 V supply, and what output power is achievable?

Yes, the TDA7498MVTR operates within its 14–39 V supply range. At 24 V and RL = 6 Ω, output power drops to approximately 45 W at 10% THD (per Figure 4 characterization curve). Efficiency remains above 85%, and all protections remain fully functional. Gain settings and input sensitivity are unaffected by supply voltage changes.

Is the PowerSSO-36 EPU package RoHS-compliant and lead-free?

Yes, the TDA7498MVTR in PowerSSO-36 EPU packaging is RoHS-compliant and lead-free per STMicroelectronics' official product change notices (PCN) and material declarations. The exposed pad (EP) is matte tin-plated, and the package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements for standard reflow profiles.

TDA7498MVTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 36-PowerFSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Class D

Output Type:: 1-Channel (Mono)

Max Output Power x Channels @ Load:: 100W x 1 @ 6Ohm

Voltage - Supply:: 14V ~ 39V

Features:: Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Surface Mount

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Supplier Device Package:: PowerSSO-36 EPU

TDA7498MVTR FAQ

1.How can I place an order for TDA7498MVTR through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7498MVTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TDA7498MVTR reliable?

The price and inventory of TDA7498MVTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7498MVTR is usually 5 days.

3.What payment methods are accepted for TDA7498MVTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7498MVTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7498MVTR?

TDA7498MVTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7498MVTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TDA7498MVTR?

For technical support, including TDA7498MVTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7498MVTR requirements.

6.How does Aetrix verify that TDA7498MVTR is sourced from the original manufacturer or authorized distributors?

All TDA7498MVTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA7498MVTR meets industry standards.

7.What is the process for return or replacement of TDA7498MVTR?

All TDA7498MVTR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7498MVTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TDA7498MVTR part is unused and in its original packaging.

Return procedure for TDA7498MVTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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